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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1992-7-2
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pubmed:abstractText |
Transfer of imipenem resistance in Bacteroides fragilis was studied. Clinical isolate B. fragilis 10-73 was highly resistant to imipenem. Imipenem resistance was transferred from 10-73 to B. fragilis strain TM4000 at a frequency of 10(-6)/input recipient by a filter mating technique. The resistance could also be retransferred. B. fragilis 10-73 and both primary and secondary transcipients produced an imipenem-hydrolyzing metallo-beta-lactamase. Acquisition of imipenem resistance correlated with the appearance of plasmid DNA with a size (ca. 13.6 kb) similar to that of the donor strain. TM4000 transformed by electroporation with purified DNA of the 13.6-kb plasmid pBFUK1 produced the metallo-beta-lactamase and was resistant to imipenem. Transfer was resistant to DNase treatment and no transfer was seen with a sterile filtrate of the donor culture. It is suggested that gene transfer in B. fragilis has the properties of a conjugation system rather than those of transformation or transduction.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Apr
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pubmed:issn |
0021-8820
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
45
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
542-7
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pubmed:dateRevised |
2006-5-1
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pubmed:meshHeading |
pubmed-meshheading:1592686-Anti-Bacterial Agents,
pubmed-meshheading:1592686-Bacteroides fragilis,
pubmed-meshheading:1592686-Conjugation, Genetic,
pubmed-meshheading:1592686-DNA, Bacterial,
pubmed-meshheading:1592686-Drug Resistance, Microbial,
pubmed-meshheading:1592686-Electrophoresis, Agar Gel,
pubmed-meshheading:1592686-Imipenem,
pubmed-meshheading:1592686-Microbial Sensitivity Tests,
pubmed-meshheading:1592686-Phenotype,
pubmed-meshheading:1592686-Plasmids,
pubmed-meshheading:1592686-Transfection,
pubmed-meshheading:1592686-beta-Lactamases
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pubmed:year |
1992
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pubmed:articleTitle |
Conjugal transfer of imipenem resistance in Bacteroides fragilis.
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pubmed:affiliation |
Institute of Anaerobic Bacteriology, Gifu University School of Medicine, Japan.
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pubmed:publicationType |
Journal Article
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